發(fā)布時間：2019-05-30 01:18

【摘要】：基于SPOT(1990年和2000年)和Google Earth(2000—2014年)遙感影像的圖像分析,對黑河干流及上游的3條支流(格曲、麥曲、哈曲)的216個典型牛軛湖以及相應的河曲帶進行形態(tài)參數(shù)的定義與分析。沿黑河上游至下游,河曲帶的寬度是增加的,增長率的變化趨勢為"急—緩—急";中游牛軛湖數(shù)量最多;下游受到泥沙淤積的影響更大,牛軛湖從Ω形發(fā)展成U形和C形所需時間遠小于上中游。1990—2013年黑河干流僅發(fā)生2次裁彎,分別形成Ω形和U形牛軛湖,說明黑河牛軛湖的發(fā)育速率較慢。
[Abstract]:Based on the image analysis of SPOT (1990 and 2000) and Google Earth (2000-2014 remote sensing images, the main stream of the Heihe River and its three upper tributaries (Gequ, Maqu) are analyzed. The morphological parameters of 216 typical Niu yoke lakes and the corresponding river koji belts are defined and analyzed. Along the upper reaches of Heihe River to the lower reaches of Heihe River, the width of Hequ belt is increased, and the change trend of growth rate is "rapid, slow and rapid", and the number of Niuyoke Lake in the middle reaches of Heihe River is the largest. The downstream of Heihe River is more affected by sediment deposition, and the time required to develop Niu yoke Lake from 惟 shape to U shape and C shape is much smaller than that in the upper and middle reaches. From 1990 to 2013, only two bends occurred in the main stream of Heihe River, forming 惟 shaped and U shaped Niu yoke lakes, respectively. It shows that the development rate of Heihe Niuyoke Lake is slow.
【作者單位】： 長沙理工大學水利工程學院;水沙科學與水災害防治湖南省重點實驗室;水利部黃河泥沙重點實驗室;黃河水利科學研究院;
【基金】：水利部黃河泥沙重點實驗室開放課題基金(2017005) 黃河水利科學研究院院所長基金(HKY-JBYW-2016-03) 湖南省研究生科研創(chuàng)新項目(CX2017B477)
【分類號】：TV147
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本文編號：2488385